org.openimaj.image.feature.global

Class SharpnessVariation

java.lang.Object

org.openimaj.image.mask.AbstractMaskedObject<FImage>

org.openimaj.image.feature.global.SharpnessVariation

All Implemented Interfaces:

FeatureVectorProvider<DoubleFV>, ImageAnalyser<FImage>, MaskedObject<FImage>

@Reference(type=Inproceedings,
           author={"Jose San Pedro","Stefan Siersdorfer"},
           title="Ranking and Classifying Attractiveness of Photos in Folksonomies",
           year="2009",
           booktitle="18th International World Wide Web Conference",
           pages={"771","","771"},
           url="http://www2009.eprints.org/78/",
           month="April")
public class SharpnessVariation
extends AbstractMaskedObject<FImage>
implements ImageAnalyser<FImage>, FeatureVectorProvider<DoubleFV>

Sharpness measures the clarity and level of detail of an image. This class measures the variation in sharpness of an image as a function of its Laplacian, normalized by the local average luminance in the surroundings of each pixel.

Author:

Jonathon Hare

Field Summary

Fields

Modifier and Type	Field and Description
protected double	sharpnessVariation

Fields inherited from class org.openimaj.image.mask.AbstractMaskedObject

mask

Constructor Summary

Constructors

Constructor and Description
SharpnessVariation() Construct with no mask set
SharpnessVariation(FImage mask) Construct with a mask.

Method Summary

Methods

Modifier and Type	Method and Description
void	analyseImage(FImage image) Analyse an image.
DoubleFV	getFeatureVector() Get the FeatureVector associated with this object.
double	getSharpnessVariation() Get the variation in sharpness of the last image processed with analyseImage(FImage).

Methods inherited from class org.openimaj.image.mask.AbstractMaskedObject

getMask, setMask

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

sharpnessVariation

protected double sharpnessVariation

Constructor Detail

SharpnessVariation

public SharpnessVariation()

Construct with no mask set

SharpnessVariation

public SharpnessVariation(FImage mask)

Construct with a mask.

Parameters:

mask - the mask.

Method Detail

getFeatureVector

public DoubleFV getFeatureVector()

Description copied from interface: FeatureVectorProvider

Get the FeatureVector associated with this object.

Specified by:

getFeatureVector in interface FeatureVectorProvider<DoubleFV>

Returns:

the feature vector.

analyseImage

public void analyseImage(FImage image)

Description copied from interface: ImageAnalyser

Analyse an image.

Specified by:

analyseImage in interface ImageAnalyser<FImage>

Parameters:

image - The image to process in place.

getSharpnessVariation

public double getSharpnessVariation()

Get the variation in sharpness of the last image processed with analyseImage(FImage).

Returns:

the sharpness variation value